jack and jackie. story gets better, doesn't it? the harbaugh parents, jack spent his entire career as a football coach. and as for mom, here's how jim and john put it. >> nobody in the family has more competitive fire than my mother. she competes like a maniac. so i've learned, number one, that is that. and she's just always believed in us. i think that's the most important thing to me she believed in me and john. >> no one would fight more for us than our mom. you know, no matter what the situation was or teach us how to have each other's back. whether it was a little scrape in the neighborhood or something like that. she basically made it very clear that we were to have each other's back no matter what. >> the rivalry between john and jim harbaugh certainly among the most incredible rivalries in the history of football's biggest game. but in the middle, mom and dad who have experienced this rivalry for a lifetime, but it never got to the level, of course, of a super bowl. and then there's also jay harbaugh, the son of jim, and ja